Re: [Xen-users] Xen network latencies

[Mike Wright <mike.wright@xxxxxxxxxxxxxx>]

Joris Dobbelsteen wrote:
> Dear,
>
> I have a network that runs VoIP. It passes through an Xen box that has a 
> firewall running as DomU. The VoIP traffic is very sensitive to jitter 
> in arrival times. The jitter causes jerky audio. Its easy to reproduce 
> by simply downloading a lot of data and saturating downstream bandwidth 
> on the ADSL connection.
> However I have a hard time figuring out the cause of the jitter, since 
> my configuration is getting more complex at this point in time. So 
> anyone has ideas how I can measure and determinate the cause of my 
> problems? Maybe any solutions to this problem?
Hi Joris,

I can't recommend any way to measure the jitter but you may find a 
solution with a script called "wondershaper".
    http://lartc.org/wondershaper/

hth,
Mike Wright :m)

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